/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package fr.tocchisu.movies.interfaces;

import java.awt.BorderLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.regex.Pattern;
import java.util.zip.GZIPInputStream;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.filechooser.FileFilter;

/*
 * FileChooserDemo.java uses these files:
 *   images/Open16.gif
 *   images/Save16.gif
 */
public class Launcher extends JPanel implements ActionListener {
    private static final String newline = "\n";
    private final JButton openButton;
    private final JTextArea log;
    private final JFileChooser fc;

    public Launcher() {
	super(new BorderLayout());

	// Create the log first, because the action listeners
	// need to refer to it.
	log = new JTextArea(50, 50);
	log.setMargin(new Insets(5, 5, 5, 5));
	log.setEditable(false);
	JScrollPane logScrollPane = new JScrollPane(log);

	// Create a file chooser
	fc = new JFileChooser();
	fc.setFileFilter(new FileFilter() {

	    @Override
	    public String getDescription() {
		return "IMDB plain text file or archive (*.gz, *.list)";
	    }

	    @Override
	    public boolean accept(File f) {
		return f.isDirectory() || Pattern.matches("^(.*\\.gz)||(.*\\.list)$", f.getName());
	    }
	});
	fc.setMultiSelectionEnabled(true);
	// Uncomment one of the following lines to try a different
	// file selection mode. The first allows just directories
	// to be selected (and, at least in the Java look and feel,
	// shown). The second allows both files and directories
	// to be selected. If you leave these lines commented out,
	// then the default mode (FILES_ONLY) will be used.
	//
	// fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
	// fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);

	// Create the open button. We use the image from the JLF
	// Graphics Repository (but we extracted it from the jar).
	openButton = new JButton("Open a File...", createImageIcon("images/Open16.gif"));
	openButton.addActionListener(this);

	// For layout purposes, put the buttons in a separate panel
	JPanel buttonPanel = new JPanel(); // use FlowLayout
	buttonPanel.add(openButton);

	// Add the buttons and the log to this panel.
	add(buttonPanel, BorderLayout.PAGE_START);
	add(logScrollPane, BorderLayout.CENTER);
    }

    public void actionPerformed(ActionEvent e) {

	// Handle open button action.
	if (e.getSource() == openButton) {
	    int returnVal = fc.showOpenDialog(Launcher.this);

	    if (returnVal == JFileChooser.APPROVE_OPTION) {
		File[] files = fc.getSelectedFiles();
		printInfo(files);
	    } else {
		log.append("Open command cancelled by user." + newline);
	    }
	    log.setCaretPosition(log.getDocument().getLength());
	}
    }

    /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path) {
	java.net.URL imgURL = Launcher.class.getResource(path);
	if (imgURL != null) {
	    return new ImageIcon(imgURL);
	} else {
	    System.err.println("Couldn't find file: " + path);
	    return null;
	}
    }

    /**
     * Create the GUI and show it. For thread safety, this method should be invoked from the event dispatch thread.
     */
    private static void createAndShowGUI() {
	// Create and set up the window.
	JFrame frame = new JFrame("FileChooserDemo");
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	// Add content to the window.
	frame.add(new Launcher());

	// Display the window.
	frame.pack();
	frame.setVisible(true);
    }

    public static void main(String[] args) {
	// Schedule a job for the event dispatch thread:
	// creating and showing this application's GUI.
	SwingUtilities.invokeLater(new Runnable() {
	    public void run() {
		// Turn off metal's use of bold fonts
		UIManager.put("swing.boldMetal", Boolean.FALSE);
		createAndShowGUI();
	    }
	});
    }

    private void printInfo(File[] files) {
	for (File file : files) {
	    printInfo(file.getName());
	}
    }

    public void printInfo(String inFilename) {
	GZIPInputStream gzipInputStream = null;
	OutputStream out = null;
	try {
	    // To Uncompress GZip File Contents we need to open the gzip
	    // file.....
	    log.append("Opening the gzip file " + inFilename + newline);
	    gzipInputStream = new GZIPInputStream(new FileInputStream(inFilename));
	    log.append("Opening the output file............. : opened" + newline);
	    log.append("Transferring bytes from the compressed file to the output file........:     Transfer successful" + newline);
	    byte[] buf = new byte[1024]; // size can be changed according to
					 // programmer's need.
	    int len;
	    gzipInputStream = new GZIPInputStream(new FileInputStream(inFilename));
	    String outFilename = inFilename + ".list";
	    out = new FileOutputStream(outFilename);
	    while ((len = gzipInputStream.read(buf)) > 0) {
		out.write(buf, 0, len);
	    }
	    log.append("The file and stream is ......closing.......... : closed" + newline);
	} catch (IOException e) {
	    log.append("Exception has been thrown" + e + newline);
	} finally {
	    try {
		if (gzipInputStream != null)
		    gzipInputStream.close();
		if (out != null)
		    out.close();
	    } catch (IOException e) {

	    }
	}
    }
}